William sewell



yUNITED STATES PATENT OEEICE.

WILLIAM sEWELL, or 'NEW YORK, N. Y.

IMPROVEMENTIN` STEAM-PUMPS'.

Specilieation forming part of Letters Patent No.` 36,862, dated November 4, 1862.

To all whom it may concern: y

Be it known that I, WILLIAM SEWELL, of the eity,county, and State of New York, have invented a new and useful Improvement in Steam-Pumps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is alongitudinal elevation, partly in section, of asteanrpumpwith myimprovement. Fig. 2 is a plan view of the same, and Fig. 3 is a front view of the cross-head.

Similar letters of reference indicate corresponding parts in the several igures.

The object of this invention is to eombinea crank and iiy-wheel with a direeteonneetion steam-pump in a very simple manner, and without materially increasing the room occuiedand it consists in a novel arrangement of the crank-shalt, crank or cranks, cross-head, and connecting rod or rods, whereby those results are obtained. y

To enableothers skilled in the art to mak and use my invention, I will proceed to describe its construction and operation.

A is the steam-cylinder, and B the pumpcylinder, arranged in line with each other upon the bed-plate C, and having their pistons directly connected by the piston-rod D, which serves as the means of transmitting motion from the steam-piston to the pump-piston.

E is the crank-shaft, and W the `iiy-wheel. The crank-shaft is arranged transversely to the piston-rod in bearings ta on the bed-plate,

`below and almost close to the pistonrod,`and

just far enough from the pump-cylinder to permit the revolution of the crank. lThe crank F is arranged to work between the piston-rod and one side of the bed-plate, where it will neither interfere with nor be interfered with by the piston-rod. The iiy-wheel is secured to the shaft outside of the bed-plate.

G is the cross-head secured to the pistonrod, and` H is the connectingrod connecting the said cross-head with the crank-wrist, and servingjto transmit rotary motion to the crank,

and through it to the shaft and [1y-wheel. The erosshead has its arm set down from the piston-rod, as shown in Fig. 3, to bring` the axis of its journal at the same distance from the piston-rod as the axis of the crank-shaft, that when the crank` is on the centers the said rod may be parallel with the piston-rod,` and .that the power to turn the crank may be apa plied as directly as possible. The endof the cross-head is tted with a block, b, to slide in straight ways c c, provided in one side of the bed-plate, the said ways serving to guide the cross-head and to receive a considerable, proportion of the upward and downward thrust of the connectingrod,relieving tlIepiston-rod to that extent of the said thrust.

By the arrangement ofthe crank-shaft close under the piston-rod and the depression of the cross-head the 'power is enabled to be transmitted to the crank-shaft as directly as is possible without placing the shaft beyond one of the cylinders, and so making the pump occupymuch more room, and by the arrangement of the crank ori-one side of the pistonrod room is provided for a crank ofany length of stroke.

Two cranks and eonnectingrods may be employed, arranged in the same manner, o ne on each side of the piston-rod, and in that case the cross-head will require no guides.

It is obvious that the crank-shaft might be arranged above the piston-rod, and the crosshead be set upward with the same effect, and I consider such arrangement, though perhaps less convenient, to be mechanically equivalent to that represented in the drawings, and fully described.

` What I claim as myinvention, and desire to secure by Letters Patent, is-

The combined arrangement of the crank shaft, crank or` cranks, cross-heads, and con necting rod or rods, substantially as and for the purpose herein specilied.

` WILLIAM SEWELL. Vitnesses: i

M. M. LIvINGsroN 7 TIMOTHY SHINE. 

